The customer comes first! If you have any dissatisfaction with the product, we support full refund within 30 days! Indoor And Outdoor-Thermometers Fish Tank Aquarium Crawling Pet Cold Storage Temperature Electronic Temperature Probe Features: Product Name: High and low temperature alarm thermometers Material: ABS Product color: Purple Temperature measurement range: - 50 ℃ - 70 ℃ (- 58 ℉ - 158 ℉) Display resolution: 0.1 ℃/0.2 ℉ Accuracy: ± 1 ℃ ℃/℉ conversion Default-alarm temperature for startup: high temperature 28 ℃ (82.4 ℉)/low temperature 18 ℃ (64.4 ℉) Alarm duration: 10 seconds Alarm for indoor temperature when indoor sensors (built-in) are available, and alarm for outdoor temperature when adding outdoor sensors. The indoor and outdoor temperatures are displayed alternately every 4 seconds Sensor wire length: 1 meter Battery used: X1 No. 7 AAA batteries(Included) Placement method: bracket/suspension/magnet adsorption Product size: 6.5x6.5 cm / 2.56x2.56 in Packing size: 16.8x10.6x2.2 cm/6.61x4.17x0.87 in Gross weight: 0.098 kg/0.216 lb Description: Default-alarm temperature for startup: high temperature 28 ℃ (82.4 ℉)/low temperature 18 ℃ (64.4 ℉). Rapids temperature measurement by air-convection: Designed air-inlet, allowing large area of air-to enter, and accurate measurement data. Alarm for indoor temperature when indoor sensors (built-in) are available, and alarm for outdoor temperature when adding outdoor sensors. The indoor and outdoor temperatures are displayed alternately every 4 seconds. High and low temperature alarms can be set. If the actual temperature exceeds the set maximum temperature and falls below the set minimum temperature, a bell will ring for 60 seconds. Three placement methods: it can be used as a bracket or hung on a wall, with an adsorption magnet that can be adsorbed on objects containing iron, such as refrigerators. Package Included: 1 × High and low temperature alarm thermometers 1 x Sensor wire Viflosae Indoor And Outdoor-Thermometers Fish Tank Aquarium Crawling Pet Cold Storage Temperature Electronic Temperature Probe Electronics Gadgets Up to 40% Off Default-alarm temperature for startup: high temperature 28 ℃ (82.4 ℉)/low temperature 18 ℃ (64.4 ℉). Rapids temperature measurement by air-convection: Designed air-inlet, allowing large area of air-to enter, and accurate measurement data. Alarm for indoor temperature when indoor sensors (built-in) are available, and alarm for outdoor temperature when adding outdoor sensors. The indoor and outdoor temperatures are displayed alternately every 4 seconds. High and low temperature alarms can be set. If the actual temperature exceeds the set maximum temperature and falls below the set minimum temperature, a bell will ring for 60 seconds.